The Salt Marshes on the Sharpham estate, as well as a host of wildlife, are home to some incredible geological and geographical things. One of these occurrences is a strange and vigorous up-welling of gas that erupts in fountains of bubbles along the banks of the marsh, exclusively at high tide.
A hydrophone is a microphone that works underwater, and using this delicate piece of equipment Sharpham Sounds has been able to capture the sounds of the these bubbles as they rush through the liquid above them.
Please follow the link below and play through the files on the page that opens:
Hydrophone Wikipedia article: